src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Hiroyuki Yamamoto and the Claws Mail team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <glib/gi18n.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <time.h>
  30 #include <sys/stat.h>
  31
  32 #ifdef G_OS_WIN32
  33 #  include <w32lib.h>
  34 #endif
  35
  36 #include "procheader.h"
  37 #include "procmsg.h"
  38 #include "codeconv.h"
  39 #include "prefs_common.h"
  40 #include "utils.h"
  41
  42 #define BUFFSIZE        8192
  43
  44 static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
  45
  46 typedef char *(*getlinefunc) (char *, size_t, void *);
  47 typedef int (*peekcharfunc) (void *);
  48 typedef int (*getcharfunc) (void *);
  49 typedef gint (*get_one_field_func) (gchar *, size_t, void *, HeaderEntry[]);
  50
  51 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  52                                  HeaderEntry hentry[]);
  53
  54 static char *string_getline(char *buf, size_t len, char **str);
  55 static int string_peekchar(char **str);
  56 static int file_peekchar(FILE *fp);
  57 static gint generic_get_one_field(gchar *buf, size_t len, void *data,
  58                                   HeaderEntry hentry[],
  59                                   getlinefunc getline,
  60                                   peekcharfunc peekchar,
  61                                   gboolean unfold);
  62 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
  63                              gboolean full, gboolean decrypted);
  64
  65
  66 gint procheader_get_one_field(gchar *buf, size_t len, FILE *fp,
  67                               HeaderEntry hentry[])
  68 {
  69         return generic_get_one_field(buf, len, fp, hentry,
  70                                      (getlinefunc)fgets_crlf, (peekcharfunc)file_peekchar,
  71                                      TRUE);
  72 }
  73
  74 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  75                                  HeaderEntry hentry[])
  76 {
  77         return generic_get_one_field(buf, len, str, hentry,
  78                                      (getlinefunc)string_getline,
  79                                      (peekcharfunc)string_peekchar,
  80                                      TRUE);
  81 }
  82
  83 static char *string_getline(char *buf, size_t len, char **str)
  84 {
  85         gboolean is_cr = FALSE;
  86         gboolean last_was_cr = FALSE;
  87
  88         if (!*str || !**str)
  89                 return NULL;
  90
  91         for (; **str && len > 1; --len) {
  92                 is_cr = (**str == '\r');
  93                 if ((*buf++ = *(*str)++) == '\n') {
  94                     break;
  95                 }
  96                 if (last_was_cr) {
  97                         *(--buf) = '\n';
  98                         buf++;
  99                     break;
 100                 }
 101                 last_was_cr = is_cr;
 102         }
 103
 104         *buf = '\0';
 105
 106         return buf;
 107 }
 108
 109 static int string_peekchar(char **str)
 110 {
 111         return **str;
 112 }
 113
 114 static int file_peekchar(FILE *fp)
 115 {
 116         return ungetc(getc(fp), fp);
 117 }
 118
 119 static gint generic_get_one_field(gchar *buf, size_t len, void *data,
 120                           HeaderEntry *hentry,
 121                           getlinefunc getline, peekcharfunc peekchar,
 122                           gboolean unfold)
 123 {
 124         gint nexthead;
 125         gint hnum = 0;
 126         HeaderEntry *hp = NULL;
 127
 128         if (hentry != NULL) {
 129                 /* skip non-required headers */
 130                 do {
 131                         do {
 132                                 if (getline(buf, len, data) == NULL)
 133                                         return -1;
 134                                 if (buf[0] == '\r' || buf[0] == '\n')
 135                                         return -1;
 136                         } while (buf[0] == ' ' || buf[0] == '\t');
 137
 138                         for (hp = hentry, hnum = 0; hp->name != NULL;
 139                              hp++, hnum++) {
 140                                 if (!g_ascii_strncasecmp(hp->name, buf,
 141                                                  strlen(hp->name)))
 142                                         break;
 143                         }
 144                 } while (hp->name == NULL);
 145         } else {
 146                 if (getline(buf, len, data) == NULL) return -1;
 147                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
 148         }
 149
 150         /* unfold line */
 151         while (1) {
 152                 nexthead = peekchar(data);
 153                 /* ([*WSP CRLF] 1*WSP) */
 154                 if (nexthead == ' ' || nexthead == '\t') {
 155                         size_t buflen;
 156                         gboolean skiptab = (nexthead == '\t');
 157                         /* trim previous trailing \n if requesting one header or
 158                          * unfolding was requested */
 159                         if ((!hentry && unfold) || (hp && hp->unfold))
 160                                 strretchomp(buf);
 161
 162                         buflen = strlen(buf);
 163
 164                         /* concatenate next line */
 165                         if ((len - buflen) > 2) {
 166                                 if (getline(buf + buflen, len - buflen, data) == NULL)
 167                                         break;
 168                                 if (skiptab) { /* replace tab with space */
 169                                         *(buf + buflen) = ' ';
 170                                 }
 171                         } else
 172                                 break;
 173                 } else {
 174                         /* remove trailing new line */
 175                         strretchomp(buf);
 176                         break;
 177                 }
 178         }
 179
 180         return hnum;
 181 }
 182
 183 gint procheader_get_one_field_asis(gchar *buf, size_t len, FILE *fp)
 184 {
 185         return generic_get_one_field(buf, len, fp, NULL,
 186                                      (getlinefunc)fgets_crlf,
 187                                      (peekcharfunc)file_peekchar,
 188                                      FALSE);
 189 }
 190
 191 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 192 {
 193         gchar buf[BUFFSIZE];
 194         GPtrArray *headers;
 195         Header *header;
 196
 197         g_return_val_if_fail(fp != NULL, NULL);
 198
 199         headers = g_ptr_array_new();
 200
 201         while (procheader_get_one_field_asis(buf, sizeof(buf), fp) != -1) {
 202                 if ((header = procheader_parse_header(buf)) != NULL)
 203                         g_ptr_array_add(headers, header);
 204                         /*
 205                 if (*buf == ':') continue;
 206                 for (p = buf; *p && *p != ' '; p++) {
 207                         if (*p == ':') {
 208                                 header = g_new(Header, 1);
 209                                 header->name = g_strndup(buf, p - buf);
 210                                 p++;
 211                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 212                                 header->body = g_strdup(tmp);
 213
 214                                 g_ptr_array_add(headers, header);
 215                                 break;
 216                         }
 217                 }
 218                         */
 219         }
 220
 221         return headers;
 222 }
 223
 224 void procheader_header_array_destroy(GPtrArray *harray)
 225 {
 226         gint i;
 227         Header *header;
 228
 229         for (i = 0; i < harray->len; i++) {
 230                 header = g_ptr_array_index(harray, i);
 231                 procheader_header_free(header);
 232         }
 233
 234         g_ptr_array_free(harray, TRUE);
 235 }
 236
 237 void procheader_header_free(Header *header)
 238 {
 239         if (!header) return;
 240
 241         g_free(header->name);
 242         g_free(header->body);
 243         g_free(header);
 244 }
 245
 246 /*
 247   tests whether two headers' names are equal
 248   remove the trailing ':' or ' ' before comparing
 249 */
 250
 251 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 252 {
 253         int len1;
 254         int len2;
 255
 256         len1 = strlen(hdr1);
 257         len2 = strlen(hdr2);
 258         if (hdr1[len1 - 1] == ':')
 259                 len1--;
 260         if (hdr2[len2 - 1] == ':')
 261                 len2--;
 262         if (len1 != len2)
 263                 return 0;
 264
 265         return (g_ascii_strncasecmp(hdr1, hdr2, len1) == 0);
 266 }
 267
 268 /*
 269   parse headers, for example :
 270   From: dinh@enseirb.fr becomes :
 271   header->name = "From:"
 272   header->body = "dinh@enseirb.fr"
 273  */
 274
 275 Header * procheader_parse_header(gchar * buf)
 276 {
 277         gchar *p = buf;
 278         Header * header;
 279
 280         if ((*buf == ':') || (*buf == ' '))
 281                 return NULL;
 282
 283         for (p = buf; *p ; p++) {
 284                 if ((*p == ':') || (*p == ' ')) {
 285                         header = g_new(Header, 1);
 286                         header->name = g_strndup(buf, p - buf + 1);
 287                         p++;
 288                         while (*p == ' ' || *p == '\t') p++;
 289                         header->body = conv_unmime_header(p, NULL);
 290                         return header;
 291                 }
 292         }
 293         return NULL;
 294 }
 295
 296 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 297 {
 298         gchar buf[BUFFSIZE];
 299         HeaderEntry *hp;
 300         gint hnum;
 301         gchar *p;
 302
 303         if (hentry == NULL) return;
 304
 305         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 306                != -1) {
 307                 hp = hentry + hnum;
 308
 309                 p = buf + strlen(hp->name);
 310                 while (*p == ' ' || *p == '\t') p++;
 311
 312                 if (hp->body == NULL)
 313                         hp->body = g_strdup(p);
 314                 else if (procheader_headername_equal(hp->name, "To") ||
 315                          procheader_headername_equal(hp->name, "Cc")) {
 316                         gchar *tp = hp->body;
 317                         hp->body = g_strconcat(tp, ", ", p, NULL);
 318                         g_free(tp);
 319                 }
 320         }
 321 }
 322
 323 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 324                                gboolean full, gboolean decrypted)
 325 {
 326         struct stat s;
 327         FILE *fp;
 328         MsgInfo *msginfo;
 329
 330         if (stat(file, &s) < 0) {
 331                 FILE_OP_ERROR(file, "stat");
 332                 return NULL;
 333         }
 334         if (!S_ISREG(s.st_mode))
 335                 return NULL;
 336
 337         if ((fp = g_fopen(file, "rb")) == NULL) {
 338                 FILE_OP_ERROR(file, "fopen");
 339                 return NULL;
 340         }
 341
 342         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 343         fclose(fp);
 344
 345         if (msginfo) {
 346                 msginfo->size = s.st_size;
 347                 msginfo->mtime = s.st_mtime;
 348         }
 349
 350         return msginfo;
 351 }
 352
 353 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 354                               gboolean decrypted)
 355 {
 356         return parse_stream(&str, TRUE, flags, full, decrypted);
 357 }
 358
 359 enum
 360 {
 361         H_DATE          = 0,
 362         H_FROM          = 1,
 363         H_TO            = 2,
 364         H_CC            = 3,
 365         H_NEWSGROUPS    = 4,
 366         H_SUBJECT       = 5,
 367         H_MSG_ID        = 6,
 368         H_REFERENCES    = 7,
 369         H_IN_REPLY_TO   = 8,
 370         H_CONTENT_TYPE  = 9,
 371         H_SEEN          = 10,
 372         H_STATUS        = 11,
 373         H_X_STATUS      = 12,
 374         H_FROM_SPACE    = 13,
 375         H_SC_PLANNED_DOWNLOAD = 14,
 376         H_SC_MESSAGE_SIZE = 15,
 377         H_FACE          = 16,
 378         H_X_FACE        = 17,
 379         H_DISPOSITION_NOTIFICATION_TO = 18,
 380         H_RETURN_RECEIPT_TO = 19,
 381         H_SC_PARTIALLY_RETRIEVED = 20,
 382         H_SC_ACCOUNT_SERVER = 21,
 383         H_SC_ACCOUNT_LOGIN = 22,
 384         H_LIST_POST        = 23,
 385         H_LIST_SUBSCRIBE   = 24,
 386         H_LIST_UNSUBSCRIBE = 25,
 387         H_LIST_HELP        = 26,
 388         H_LIST_ARCHIVE     = 27,
 389         H_LIST_OWNER       = 28,
 390 };
 391
 392 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 393                                    {"From:",            NULL, TRUE},
 394                                    {"To:",              NULL, TRUE},
 395                                    {"Cc:",              NULL, TRUE},
 396                                    {"Newsgroups:",      NULL, TRUE},
 397                                    {"Subject:",         NULL, TRUE},
 398                                    {"Message-ID:",      NULL, FALSE},
 399                                    {"References:",      NULL, FALSE},
 400                                    {"In-Reply-To:",     NULL, FALSE},
 401                                    {"Content-Type:",    NULL, FALSE},
 402                                    {"Seen:",            NULL, FALSE},
 403                                    {"Status:",          NULL, FALSE},
 404                                    {"X-Status:",        NULL, FALSE},
 405                                    {"From ",            NULL, FALSE},
 406                                    {"SC-Marked-For-Download:", NULL, FALSE},
 407                                    {"SC-Message-Size:", NULL, FALSE},
 408                                    {"Face:",            NULL, FALSE},
 409                                    {"X-Face:",          NULL, FALSE},
 410                                    {"Disposition-Notification-To:", NULL, FALSE},
 411                                    {"Return-Receipt-To:", NULL, FALSE},
 412                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 413                                    {"SC-Account-Server:", NULL, FALSE},
 414                                    {"SC-Account-Login:",NULL, FALSE},
 415                                    {"List-Post:",       NULL, TRUE},
 416                                    {"List-Subscribe:",  NULL, TRUE},
 417                                    {"List-Unsubscribe:",NULL, TRUE},
 418                                    {"List-Help:",       NULL, TRUE},
 419                                    {"List-Archive:",    NULL, TRUE},
 420                                    {"List-Owner:",      NULL, TRUE},
 421                                    {NULL,               NULL, FALSE}};
 422
 423 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 424                                     {"From:",           NULL, TRUE},
 425                                     {"To:",             NULL, TRUE},
 426                                     {"Cc:",             NULL, TRUE},
 427                                     {"Newsgroups:",     NULL, TRUE},
 428                                     {"Subject:",        NULL, TRUE},
 429                                     {"Message-ID:",     NULL, FALSE},
 430                                     {"References:",     NULL, FALSE},
 431                                     {"In-Reply-To:",    NULL, FALSE},
 432                                     {"Content-Type:",   NULL, FALSE},
 433                                     {"Seen:",           NULL, FALSE},
 434                                     {"Status:",         NULL, FALSE},
 435                                     {"X-Status:",       NULL, FALSE},
 436                                     {"From ",           NULL, FALSE},
 437                                     {"SC-Marked-For-Download:", NULL, FALSE},
 438                                     {"SC-Message-Size:",NULL, FALSE},
 439                                     {NULL,              NULL, FALSE}};
 440
 441 static HeaderEntry* procheader_get_headernames(gboolean full)
 442 {
 443         return full ? hentry_full : hentry_short;
 444 }
 445
 446 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 447                                  gboolean decrypted)
 448 {
 449         return parse_stream(fp, FALSE, flags, full, decrypted);
 450 }
 451
 452 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 453                              gboolean full, gboolean decrypted)
 454 {
 455         MsgInfo *msginfo;
 456         gchar buf[BUFFSIZE];
 457         gchar *p, *tmp;
 458         gchar *hp;
 459         HeaderEntry *hentry;
 460         gint hnum;
 461         void *orig_data = data;
 462
 463         get_one_field_func get_one_field =
 464                 isstring ? (get_one_field_func)string_get_one_field
 465                          : (get_one_field_func)procheader_get_one_field;
 466
 467         hentry = procheader_get_headernames(full);
 468
 469         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 470                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1) {
 471                         if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
 472                                 strlen("X-Claws-End-Special-Headers:"))) ||
 473                             (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
 474                                 strlen("X-Sylpheed-End-Special-Headers:"))))
 475                                 break;
 476                         /* from other mailers */
 477                         if (!strncmp(buf, "Date: ", 6)
 478                         ||  !strncmp(buf, "To: ", 4)
 479                         ||  !strncmp(buf, "From: ", 6)
 480                         ||  !strncmp(buf, "Subject: ", 9)) {
 481                                 if (isstring)
 482                                         data = orig_data;
 483                                 else
 484                                         rewind((FILE *)data);
 485                                 break;
 486                         }
 487                 }
 488         }
 489
 490         msginfo = procmsg_msginfo_new();
 491
 492         if (flags.tmp_flags || flags.perm_flags)
 493                 msginfo->flags = flags;
 494         else
 495                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 496
 497         msginfo->inreplyto = NULL;
 498
 499         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 500                != -1) {
 501                 hp = buf + strlen(hentry[hnum].name);
 502                 while (*hp == ' ' || *hp == '\t') hp++;
 503
 504                 switch (hnum) {
 505                 case H_DATE:
 506                         if (msginfo->date) break;
 507                         msginfo->date_t =
 508                                 procheader_date_parse(NULL, hp, 0);
 509                         if (g_utf8_validate(hp, -1, NULL)) {
 510                                 msginfo->date = g_strdup(hp);
 511                         } else {
 512                                 gchar *utf = conv_codeset_strdup(
 513                                         hp,
 514                                         conv_get_locale_charset_str_no_utf8(),
 515                                         CS_INTERNAL);
 516                                 if (utf == NULL ||
 517                                     !g_utf8_validate(utf, -1, NULL)) {
 518                                         g_free(utf);
 519                                         utf = g_malloc(strlen(buf)*2+1);
 520                                         conv_localetodisp(utf,
 521                                                 strlen(hp)*2+1, hp);
 522                                 }
 523                                 msginfo->date = utf;
 524                         }
 525                         break;
 526                 case H_FROM:
 527                         if (msginfo->from) break;
 528                         msginfo->from = conv_unmime_header(hp, NULL);
 529                         msginfo->fromname = procheader_get_fromname(msginfo->from);
 530                         remove_return(msginfo->from);
 531                         remove_return(msginfo->fromname);
 532                         break;
 533                 case H_TO:
 534                         tmp = conv_unmime_header(hp, NULL);
 535                         remove_return(tmp);
 536                         if (msginfo->to) {
 537                                 p = msginfo->to;
 538                                 msginfo->to =
 539                                         g_strconcat(p, ", ", tmp, NULL);
 540                                 g_free(p);
 541                         } else
 542                                 msginfo->to = g_strdup(tmp);
 543                         g_free(tmp);
 544                         break;
 545                 case H_CC:
 546                         tmp = conv_unmime_header(hp, NULL);
 547                         remove_return(tmp);
 548                         if (msginfo->cc) {
 549                                 p = msginfo->cc;
 550                                 msginfo->cc =
 551                                         g_strconcat(p, ", ", tmp, NULL);
 552                                 g_free(p);
 553                         } else
 554                                 msginfo->cc = g_strdup(tmp);
 555                         g_free(tmp);
 556                         break;
 557                 case H_NEWSGROUPS:
 558                         if (msginfo->newsgroups) {
 559                                 p = msginfo->newsgroups;
 560                                 msginfo->newsgroups =
 561                                         g_strconcat(p, ",", hp, NULL);
 562                                 g_free(p);
 563                         } else
 564                                 msginfo->newsgroups = g_strdup(hp);
 565                         break;
 566                 case H_SUBJECT:
 567                         if (msginfo->subject) break;
 568                         msginfo->subject = conv_unmime_header(hp, NULL);
 569                         unfold_line(msginfo->subject);
 570                        break;
 571                 case H_MSG_ID:
 572                         if (msginfo->msgid) break;
 573
 574                         extract_parenthesis(hp, '<', '>');
 575                         remove_space(hp);
 576                         msginfo->msgid = g_strdup(hp);
 577                         break;
 578                 case H_REFERENCES:
 579                         msginfo->references =
 580                                 references_list_prepend(msginfo->references,
 581                                                         hp);
 582                         break;
 583                 case H_IN_REPLY_TO:
 584                         if (msginfo->inreplyto) break;
 585
 586                         eliminate_parenthesis(hp, '(', ')');
 587                         if ((p = strrchr(hp, '<')) != NULL &&
 588                             strchr(p + 1, '>') != NULL) {
 589                                 extract_parenthesis(p, '<', '>');
 590                                 remove_space(p);
 591                                 if (*p != '\0')
 592                                         msginfo->inreplyto = g_strdup(p);
 593                         }
 594                         break;
 595                 case H_CONTENT_TYPE:
 596                         if (!g_ascii_strncasecmp(hp, "multipart/", 10))
 597                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 598                         break;
 599 #ifdef ALLOW_HEADER_HINT
 600                 case H_SEEN:
 601                         /* mnews Seen header */
 602                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 603                         break;
 604 #endif
 605                 case H_FACE:
 606                         if (!msginfo->extradata)
 607                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 608                         if (msginfo->extradata->face) break;
 609                         msginfo->extradata->face = g_strdup(hp);
 610                         break;
 611                 case H_X_FACE:
 612                         if (!msginfo->extradata)
 613                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 614                         if (msginfo->extradata->xface) break;
 615                         msginfo->extradata->xface = g_strdup(hp);
 616                         break;
 617                 case H_DISPOSITION_NOTIFICATION_TO:
 618                         if (!msginfo->extradata)
 619                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 620                         if (msginfo->extradata->dispositionnotificationto) break;
 621                         msginfo->extradata->dispositionnotificationto = g_strdup(hp);
 622                         break;
 623                 case H_RETURN_RECEIPT_TO:
 624                         if (!msginfo->extradata)
 625                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 626                         if (msginfo->extradata->returnreceiptto) break;
 627                         msginfo->extradata->returnreceiptto = g_strdup(hp);
 628                         break;
 629 /* partial download infos */
 630                 case H_SC_PARTIALLY_RETRIEVED:
 631                         if (!msginfo->extradata)
 632                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 633                         if (msginfo->extradata->partial_recv) break;
 634                         msginfo->extradata->partial_recv = g_strdup(hp);
 635                         break;
 636                 case H_SC_ACCOUNT_SERVER:
 637                         if (!msginfo->extradata)
 638                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 639                         if (msginfo->extradata->account_server) break;
 640                         msginfo->extradata->account_server = g_strdup(hp);
 641                         break;
 642                 case H_SC_ACCOUNT_LOGIN:
 643                         if (!msginfo->extradata)
 644                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 645                         if (msginfo->extradata->account_login) break;
 646                         msginfo->extradata->account_login = g_strdup(hp);
 647                         break;
 648                 case H_SC_MESSAGE_SIZE:
 649                         if (msginfo->total_size) break;
 650                         msginfo->total_size = atoi(hp);
 651                         break;
 652                 case H_SC_PLANNED_DOWNLOAD:
 653                         msginfo->planned_download = atoi(hp);
 654                         break;
 655 /* end partial download infos */
 656 #ifdef ALLOW_HEADER_HINT
 657                 case H_STATUS:
 658                         if (strchr(hp, 'R') != NULL)
 659                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 660                         if (strchr(hp, 'O') != NULL)
 661                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 662                         if (strchr(hp, 'U') != NULL)
 663                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 664                         break;
 665                 case H_X_STATUS:
 666                         if (strchr(hp, 'D') != NULL)
 667                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 668                                               MSG_REALLY_DELETED);
 669                         if (strchr(hp, 'F') != NULL)
 670                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 671                         if (strchr(hp, 'd') != NULL)
 672                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 673                         if (strchr(hp, 'r') != NULL)
 674                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 675                         if (strchr(hp, 'f') != NULL)
 676                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 677                         break;
 678 #endif
 679                 case H_FROM_SPACE:
 680                         if (msginfo->fromspace) break;
 681                         msginfo->fromspace = g_strdup(hp);
 682                         remove_return(msginfo->fromspace);
 683                         break;
 684 /* list infos */
 685                 case H_LIST_POST:
 686                         if (!msginfo->extradata)
 687                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 688                         if (msginfo->extradata->list_post) break;
 689                         msginfo->extradata->list_post = g_strdup(hp);
 690                         break;
 691                 case H_LIST_SUBSCRIBE:
 692                         if (!msginfo->extradata)
 693                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 694                         if (msginfo->extradata->list_subscribe) break;
 695                         msginfo->extradata->list_subscribe = g_strdup(hp);
 696                         break;
 697                 case H_LIST_UNSUBSCRIBE:
 698                         if (!msginfo->extradata)
 699                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 700                         if (msginfo->extradata->list_unsubscribe) break;
 701                         msginfo->extradata->list_unsubscribe = g_strdup(hp);
 702                         break;
 703                 case H_LIST_HELP:
 704                         if (!msginfo->extradata)
 705                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 706                         if (msginfo->extradata->list_help) break;
 707                         msginfo->extradata->list_help = g_strdup(hp);
 708                         break;
 709                 case H_LIST_ARCHIVE:
 710                         if (!msginfo->extradata)
 711                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 712                         if (msginfo->extradata->list_archive) break;
 713                         msginfo->extradata->list_archive = g_strdup(hp);
 714                         break;
 715                 case H_LIST_OWNER:
 716                         if (!msginfo->extradata)
 717                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 718                         if (msginfo->extradata->list_owner) break;
 719                         msginfo->extradata->list_owner = g_strdup(hp);
 720                         break;
 721 /* end list infos */
 722                 default:
 723                         break;
 724                 }
 725         }
 726
 727         if (!msginfo->inreplyto && msginfo->references)
 728                 msginfo->inreplyto =
 729                         g_strdup((gchar *)msginfo->references->data);
 730
 731         return msginfo;
 732 }
 733
 734 gchar *procheader_get_fromname(const gchar *str)
 735 {
 736         gchar *tmp, *name;
 737
 738         Xstrdup_a(tmp, str, return NULL);
 739
 740         if (*tmp == '\"') {
 741                 extract_quote(tmp, '\"');
 742                 g_strstrip(tmp);
 743         } else if (strchr(tmp, '<')) {
 744                 eliminate_parenthesis(tmp, '<', '>');
 745                 g_strstrip(tmp);
 746                 if (*tmp == '\0') {
 747                         strcpy(tmp, str);
 748                         extract_parenthesis(tmp, '<', '>');
 749                         g_strstrip(tmp);
 750                 }
 751         } else if (strchr(tmp, '(')) {
 752                 extract_parenthesis(tmp, '(', ')');
 753                 g_strstrip(tmp);
 754         }
 755
 756         if (*tmp == '\0')
 757                 name = g_strdup(str);
 758         else
 759                 name = g_strdup(tmp);
 760
 761         return name;
 762 }
 763
 764 static gint procheader_scan_date_string(const gchar *str,
 765                                         gchar *weekday, gint *day,
 766                                         gchar *month, gint *year,
 767                                         gint *hh, gint *mm, gint *ss,
 768                                         gchar *zone)
 769 {
 770         gint result;
 771         gint month_n;
 772         gchar zone1[3];
 773         gchar zone2[3];
 774
 775         if (str == NULL)
 776                 return -1;
 777
 778         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 779                         weekday, day, month, year, hh, mm, ss, zone);
 780         if (result == 8) return 0;
 781
 782         /* RFC2822 */
 783         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 784                         weekday, day, month, year, hh, mm, ss, zone);
 785         if (result == 8) return 0;
 786
 787         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 788                         day, month, year, hh, mm, ss, zone);
 789         if (result == 7) return 0;
 790
 791         *zone = '\0';
 792         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 793                         weekday, day, month, year, hh, mm, ss);
 794         if (result == 7) return 0;
 795
 796         result = sscanf(str, "%d %9s %d %2d:%2d:%2d",
 797                         day, month, year, hh, mm, ss);
 798         if (result == 6) return 0;
 799
 800         *ss = 0;
 801         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 802                         weekday, day, month, year, hh, mm, zone);
 803         if (result == 7) return 0;
 804
 805         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 806                         day, month, year, hh, mm, zone);
 807         if (result == 6) return 0;
 808
 809         *zone = '\0';
 810         result = sscanf(str, "%10s %d %9s %d %2d:%2d",
 811                         weekday, day, month, year, hh, mm);
 812         if (result == 6) return 0;
 813
 814         result = sscanf(str, "%d %9s %d %2d:%2d",
 815                         day, month, year, hh, mm);
 816         if (result == 5) return 0;
 817
 818         /* RFC3339 subset */
 819         *weekday = '\0';
 820         result = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d+%2s:%2s",
 821                         year, &month_n, day, hh, mm, ss, zone1, zone2);
 822         if (result == 8) {
 823                 if (1 <= month_n && month_n <= 12) {
 824                         strncpy2(month, monthstr+((month_n-1)*3), 4);
 825                         *zone = '+';
 826                         strncpy2(zone+1, zone1, 3);
 827                         strncpy2(zone+3, zone2, 3);
 828                         return 0;
 829                 }
 830         }
 831
 832         /* RFC3339 subset */
 833         *zone = '\0';
 834         *weekday = '\0';
 835         result = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d",
 836                         year, &month_n, day, hh, mm, ss);
 837         if (result == 6) {
 838                 if (1 <= month_n && month_n <= 12) {
 839                         strncpy2(month, monthstr+((month_n-1)*3), 4);
 840                         return 0;
 841                 }
 842         }
 843
 844         return -1;
 845 }
 846
 847 /*
 848  * Hiro, most UNIXen support this function:
 849  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 850  */
 851 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 852 {
 853         gchar weekday[11];
 854         gint day;
 855         gchar month[10];
 856         gint year;
 857         gint hh, mm, ss;
 858         GDateMonth dmonth;
 859         gchar *p;
 860
 861         if (!t)
 862                 return FALSE;
 863
 864         memset(t, 0, sizeof *t);
 865
 866         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 867                                         &hh, &mm, &ss, zone) < 0) {
 868                 g_warning("Invalid date: %s\n", src);
 869                 return FALSE;
 870         }
 871
 872         /* Y2K compliant :) */
 873         if (year < 100) {
 874                 if (year < 70)
 875                         year += 2000;
 876                 else
 877                         year += 1900;
 878         }
 879
 880         month[3] = '\0';
 881         if ((p = strstr(monthstr, month)) != NULL)
 882                 dmonth = (gint)(p - monthstr) / 3 + 1;
 883         else {
 884                 g_warning("Invalid month: %s\n", month);
 885                 dmonth = G_DATE_BAD_MONTH;
 886         }
 887
 888         t->tm_sec = ss;
 889         t->tm_min = mm;
 890         t->tm_hour = hh;
 891         t->tm_mday = day;
 892         t->tm_mon = dmonth - 1;
 893         t->tm_year = year - 1900;
 894         t->tm_wday = 0;
 895         t->tm_yday = 0;
 896         t->tm_isdst = -1;
 897
 898         mktime(t);
 899
 900         return TRUE;
 901 }
 902
 903 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 904 {
 905         gchar weekday[11];
 906         gint day;
 907         gchar month[10];
 908         gint year;
 909         gint hh, mm, ss;
 910         gchar zone[6];
 911         GDateMonth dmonth = G_DATE_BAD_MONTH;
 912         struct tm t;
 913         gchar *p;
 914         time_t timer;
 915         time_t tz_offset;
 916
 917         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 918                                         &hh, &mm, &ss, zone) < 0) {
 919                 if (dest && len > 0)
 920                         strncpy2(dest, src, len);
 921                 return 0;
 922         }
 923
 924         /* Y2K compliant :) */
 925         if (year < 1000) {
 926                 if (year < 50)
 927                         year += 2000;
 928                 else
 929                         year += 1900;
 930         }
 931
 932         month[3] = '\0';
 933         for (p = monthstr; *p != '\0'; p += 3) {
 934                 if (!g_ascii_strncasecmp(p, month, 3)) {
 935                         dmonth = (gint)(p - monthstr) / 3 + 1;
 936                         break;
 937                 }
 938         }
 939
 940         t.tm_sec = ss;
 941         t.tm_min = mm;
 942         t.tm_hour = hh;
 943         t.tm_mday = day;
 944         t.tm_mon = dmonth - 1;
 945         t.tm_year = year - 1900;
 946         t.tm_wday = 0;
 947         t.tm_yday = 0;
 948         t.tm_isdst = -1;
 949
 950         timer = mktime(&t);
 951         tz_offset = remote_tzoffset_sec(zone);
 952         if (tz_offset != -1)
 953                 timer += tzoffset_sec(&timer) - tz_offset;
 954
 955         if (dest)
 956                 procheader_date_get_localtime(dest, len, timer);
 957
 958         return timer;
 959 }
 960
 961 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 962 {
 963         struct tm *lt;
 964         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 965         gchar *str;
 966         const gchar *src_codeset, *dest_codeset;
 967         struct tm buf;
 968
 969         lt = localtime_r(&timer, &buf);
 970
 971         if (prefs_common.date_format)
 972                 fast_strftime(dest, len, prefs_common.date_format, lt);
 973         else
 974                 fast_strftime(dest, len, default_format, lt);
 975
 976         if (!g_utf8_validate(dest, -1, NULL)) {
 977                 src_codeset = conv_get_locale_charset_str_no_utf8();
 978                 dest_codeset = CS_UTF_8;
 979                 str = conv_codeset_strdup(dest, src_codeset, dest_codeset);
 980                 if (str) {
 981                         strncpy2(dest, str, len);
 982                         g_free(str);
 983                 }
 984         }
 985 }
 986
 987 /* Added by Mel Hadasht on 27 Aug 2001 */
 988 /* Get a header from msginfo */
 989 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 990 {
 991         gchar *file;
 992         FILE *fp;
 993         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
 994                                { NULL, NULL, FALSE } };
 995         gint val;
 996
 997         hentry[0].name = header;
 998
 999         g_return_val_if_fail(msginfo != NULL, -1);
1000         file = procmsg_get_message_file_path(msginfo);
1001         if ((fp = g_fopen(file, "rb")) == NULL) {
1002                FILE_OP_ERROR(file, "fopen");
1003                g_free(file);
1004                return -1;
1005         }
1006         val = procheader_get_one_field(buf,len, fp, hentry);
1007         if (fclose(fp) == EOF) {
1008                 FILE_OP_ERROR(file, "fclose");
1009                 claws_unlink(file);
1010                 g_free(file);
1011                 return -1;
1012         }
1013
1014         g_free(file);
1015         if (val == -1)
1016                 return -1;
1017
1018         return 0;
1019 }